Moreover, there seems to be a trend between buildings with their own zip Codes and the amount of money they generate. According to recent analyses of tax data, people filing taxes from the Seagram Building, a building with its own exclusive zip code, have the highest average adjusted gross income of $13.9 million in the U.S.A. The studies of non-profit tax publication Tax Analysts show that out of the country’s twentieth wealthiest zip codes, eleven are from New York City, most being single buildings. This statistic certainly emphasizes Manhattan’s wealth in relation to the rest of the nation.

Many of these skyscrapers have a corporate rather than residential function. Philip London, a partner at Wiss & Company LLP says there are several reasons for people using corporate mailing addresses for personal tax returns rather than home ones. Clients could be travelling frequently so it would make more sense for their financial statements to be sent to business addresses. Alternatively, they might use the address of an accountant or attorney who manages their finances.